Air jet impingement cooling for hot stamping dies

The strength of panel sheets can be increased by 2–3 times after hot stamping, and for high quality stamped sheets, uniform cooling rate on the die face to quench is needed. However, it difficult water channels, commonly used stamping dies, dissipate heat evenly. In addition, dies are easily corroded contact with at temperature. Thus, this study considers air quenching process. airflow applied sheet directly during forming stage cool quench, eliminating difficulties channel design providing more cooling. Simulations experiments were test feasibility CSC-15B22 steel. A simple tool flat either or channels was testing, results show that both direct indirect stamping. With cooling, sufficient complete martensite transition, though 40% lower than To improve efficiency system obtain an jet impingement (direct cooling) also tested. Results a similar obtained in possible provide superior These reference new systems dies.